Question Upgrading from GTX 970 to GTX 1070. Is my PSU sufficient?

[Scorpion89]

As per the title. My Asus GTX 970 is overclocked. I mainly play Apex legends and BF5 at 1080p 144mhz. In BF5 on the lowest graphics settings, the frame rate is right on the edge of being acceptably smooth. In Apex Legends it performs a lot better but I'd still like an upgrade because it struggles a little when the whole map is visible, or when scoped.

I see a lot of used GTX 1070's on the bay (in UK) and it would seem like the logical upgrade (unless someone can suggest a more appropriate alternative).
I know I can get a RTX 2060 brand new but they are £350 and I dont really want to spend that much. I'd preferably like to spend around £200 - £250 max.
By the way it needs to be a blower style because my case only supports one fan, so I dont think an open air type would work so well.

Specs:
Upgraded prebuilt Asus G11CD gaming PC
CPU: I7-6700k + Pure Rock Slim CPU cooler
GPU: Overclocked GTX 970
Memory: 16 gb DD4-2132 (motherboard only supports 2132)
HDD: 1TB
SSD Drive: No (dont think I need one)
PSU: Great Wall GW-ATX500BL Semi-Modular 500W ATX PSU
Monitor: Asus VG248 144mhz
Windows 10

So I'm currently looking at a "MSI GTX 1070 Aero" which I dont plan to overclock. Seem like a good idea? Will PSU be able to run it?

 

[NightHawkRMX]

You ask if your PSU is sufficient but don't say what power supply you have.

What is the make and model of this "500w PSU"

 

[Scorpion89]

You ask if your PSU is sufficient but don't say what power supply you have.

What is the make and model of this "500w PSU"

Its a "Great Wall GW-ATX500BL Semi-Modular 500W ATX PSU" it came stock with the PC when I bought it.